[1,2,5,6]Tetrathiocino-[3,4-c; 7,8-c']diisothiazole-3,8-dicarbon

Details [1,2,5,6]Tetrathiocino-[3,4-c; 7,8-c']diisothiazole-3,8-dicarbon [1,2,5,6]Tetrathiocino-[3,4-c; 7,8-c']diisothiazole-3,8-dicarbon

1976-07-13

1978-01-03

Gallagher, R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260302S, 260785, 260786, C07D51314

Patent

active

040666565

ABSTRACT:
Described is a process for preparing 3,4-dimercaptoisothiazole-5-carbonitrile disalt, preferably disodium salt, and its conversion to 1,4-dithiino[2,3-c; 6,5-c']-diisothiazole-3,7-dicarbonitrile through an intermediate dimeric structure believed to be [1,2,5,6]tetrathiocino-[3,4-c; 7,8-c']diisothiazole-3,8-dicarbonitrile. 3,4-Dimercaptoisothiazole-5-carbonitrile disodium salt and [1,2,5,6]tetrathiocino[3,4-c; 7,8-c']diisothiazole-3,8-dicarbonitrile are useful rubber curing agents, and 1,4-dithiino[2,3-c; 6,5-c']diisothiazole-3,7-dicarbonitrile is the immediate precursor of 1,4-dithiino[2,3-c; 6,5-c']diisothiazole-3,7-dicarboxylic acid, a yellow pigment.

REFERENCES:
patent: 3101365 (1963-08-01), Vest
C & E News, Jan. 7, 1963, pp. 48, 49, & 51.

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